Measurement on Light Yield of Liquid Scintillator Based on P-Xylene

The relative light output of liquid scintillator based on p-xylene(PX) was measured in this paper. The setup for testing on light output was clearly displayed. The results showed that the light yield increased as the addition of the second solute p-bis(o-methylatyryl)-benzene(bis-MSB). Bis-MSB moves the maxmun of fluorescence emission spectra of liquid scintillator from 365nm to 425nm, which is the most sensitive region for the PMT, so the possibility of self-absorption and the loss of light output could be reduced to some extent.